[sheepdog] [PATCH RFC 0/4] add support online snapshot from collie and qemu-img

[MORITA Kazutaka]

This series makes sheep return SD_RES_READONLY when write requests are
sent to the snapshot data objects, and notifies the running VMs that
they need to reload the vdi objects.

This conflicts with Yuan's patches to cleanup sheep/vdi.c.  I'll
rebase and refactor this series later.


MORITA Kazutaka (4):
  add helper function to check the vdi is snapshot
  sheep: make oid_to_vid support any kind of objects
  sheep: notify the previous vid with copy number
  sheep: return SD_RES_READONLY when write requests are sent to
    snapshots

 collie/collie.h          |    1 -
 collie/common.c          |    7 +----
 collie/node.c            |    2 +-
 collie/vdi.c             |   24 +++++++-------
 include/internal_proto.h |   13 ++++++++
 include/sheep.h          |    5 ++-
 include/sheepdog_proto.h |   12 ++++---
 sheep/gateway.c          |   10 ++++++
 sheep/group.c            |    2 +-
 sheep/ops.c              |   10 ++++--
 sheep/plain_store.c      |    3 +-
 sheep/sheep_priv.h       |    4 ++-
 sheep/vdi.c              |   72 ++++++++++++++++++++++++++++-----------------
 13 files changed, 106 insertions(+), 59 deletions(-)

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1.7.2.5